Don Alto is a pre-made Sim in The Sims 3 for Nintendo DS. He is the husband of Holly Alto, and lives in Beacon Bay. Strangely, it seems that he took her last name. He wears a purple shirt, black pants, and brown shoes; a very casual outfit compared to Holly's businesswoman outfit. He is good friends with Bambi Landgraab, friends with Cecilia Goth, and enemies with Malcolm Landgraab. His traits are Artistic, Outgoing, Ambitious, and Neurotic, and his lifetime wish is to be a CEO of a Mega-Corporation, although, at the start of the game, he works in the political career.

Based on the current theory that Beacon Bay takes place after Pleasantview, or even in another alternate universe of The Sims Continuity, Don Alto might be a version of Don Lothario. This idea has been strengthened by the possibility that he only married Holly for her family's money. Though, if Beacon Bay truly took place after The Sims 2, then the Holly in the The Sims 3 would either be dead or quite old by that that point, and the Holly in the The Sims 3 for console could be her daughter, or even granddaughter. This theory has not been proven yet.